Edwards Liquid Ring Two-Stage Pumps for the Power Industry
Edwards liquid ring vacuum pumps provide vacuum solutions for power industry applications, including condenser air extraction, waterbox priming, fly ash handling, and flue gas desulphurisation. Engineered around the requirements of thermal, nuclear, and solar-powered plants, these systems help remove air and non-condensable gases, support condenser performance, and provide robust vacuum pumping for critical power plant processes.
Liquid Ring Two-Stage Pump Design and Features
Applications
Power Industry Liquid Ring Pump Packages
Edwards offers two standard condenser air extraction package concepts for different power industry requirements.
| Package | Application / Configuration | Key Features |
|---|---|---|
| CEP SHR2400 – SHR23500 |
Larger steam turbine plants | Fully automatic operation, dedicated seal water circuit, inlet water spray, inter-stage anti-cavitation device, recirculation pump, multiple level-control set points, discharge temperature monitoring, airflow measurement, and heat exchanger options |
| SCP EHR2190 – SHR2750 |
Lower-capacity industrial and marine installations | Manual operation, simplex/duplex/common configurations, seal water recirculation, inlet water spray, inter-stage anti-cavitation device, and plate-type heat exchanger |
Waterbox Priming Systems
The Edwards waterbox priming system uses three main components: vacuum pumps, a vacuum receiver, and priming valves supplied according to customer requirements. Simplex, duplex, and common package arrangements are available. Duplex systems provide two liquid ring pumps with independent seal-water recirculation systems, while common configurations use two pumps with a combined recirculation system.
Custom Liquid Ring Two-Stage Vacuum Systems
For specialised power industry requirements, Edwards offers several non-standard system configurations:
| Custom System | Purpose / Application |
|---|---|
| Hybrid Air Ejector / Liquid Ring System | Combines air ejector and liquid ring pump technology |
| Steam Ejector / Liquid Pump System | Combines steam ejector and liquid pump technology |
| Large-Capacity Hogging System | Single-stage system for air-cooled condensers |
| Stainless Steel Pump Construction | Available for geothermal applications |
| Custom Seal Water Cooling | Cooling system configured for specific requirements |
| Multiple Heat Exchangers | Designed for applications using low-quality cooling water |
| Air-Blast Cooler | Suitable where cooling water availability is limited |
These configurations allow the liquid ring vacuum system to be adapted to specific power industry operating conditions and installation requirements.